Combined light source of coaxial light source and polarized light source

Abstract

The utility model discloses a combined light source of a coaxial light source and a polarized light source. The combined light source comprises a polarized light source assembly, a coaxial light source assembly and a connecting piece, a transmission through hole is formed in the center of the polarized light source assembly, and a polarized light source circuit board surrounding the periphery of the transmission through hole is arranged in the polarized light source assembly; a coaxial light outlet is formed in the lower portion of the coaxial light source assembly, and the coaxial light source assembly is arranged above the polarized face light source assembly in an overlapped mode; the connecting piece comprises a first fixing part and a second fixing part which are perpendicular to each other, and the first fixing part and the second fixing part are detachably connected with one side of the coaxial light source assembly and one side of the polarized face light source assembly respectively. According to the utility model, the coaxial light source assembly and the polarized light source assembly are connected into a whole through the connecting piece; a coaxial light source and a polarized light source can be used according to requirements, the overall operability is improved, and the requirements of different scenes are met.

Description

Technical Field

[0001] The utility model relates to the field of detection light sources, in particular to a combined light source of a coaxial light source and a polarized surface light source. Background Art

[0002] In the field of machine vision, coaxial light is a special lighting technology in which the light source is coaxial with the axis of the imaging system (such as a camera lens). This layout allows the light to shine directly on the object being observed, almost perpendicular to the surface of the object. Because the incident angle of the light is very small, it can significantly reduce the generation of shadows and reflections, thereby providing a more uniform and consistent lighting effect. This is especially important for detecting objects with smooth or reflective surfaces in machine vision systems because it can improve the accuracy and reproducibility of detection. Polarized light sources can help distinguish and highlight different characteristics of an object, such as eliminating or reducing glare on smooth surfaces such as metal or glass, and improving image contrast and visibility of details.

[0003] When an object needs to be photographed using both coaxial light and line light, or when the image contrast and detail visibility need to be further improved after coaxial light illumination, a light source that can function as both light sources is required. Utility Model Content

[0004] The purpose of the present utility model is to overcome the above-mentioned defects in the prior art and provide a combined light source of a coaxial light source and a polarized surface light source, in which the coaxial light source assembly and the polarized surface light source assembly are connected into a whole through a connecting piece; the coaxial light source and the polarized surface light source can be used according to needs, thereby improving the overall operability and meeting the needs of different scenarios.

[0005] To achieve the above-mentioned purpose, the utility model provides a combined light source of a coaxial light source and a polarized surface light source, comprising a polarized surface light source component, a coaxial light source component and a connector;

[0006] A transmission through hole is provided in the center of the polarized surface light source assembly, a polarized surface light source circuit board is provided in the polarized surface light source assembly and surrounds the transmission through hole, and LED lamp beads are provided on the polarized surface light source circuit board;

[0007] A coaxial light outlet is provided below the coaxial light source assembly, and the coaxial light outlet is stacked above the polarizing surface light source assembly so that the coaxial light outlet coincides with the transmission through hole coaxially, and the diameter of the transmission through hole is slightly larger than the diameter of the coaxial light outlet;

[0008] The connecting member includes a first fixing portion and a second fixing portion which are perpendicular to each other. The first fixing portion and the second fixing portion are detachably connected to one side of the coaxial light source assembly and the polarized surface light source assembly respectively.

[0009] Furthermore, the polarized surface light source assembly further includes a polarized surface outer frame and a polarizing plate. The transmissive through-hole is disposed at the center of the polarized surface outer frame. The upper end of the polarized surface outer frame is a flat surface. The lower end of the polarized surface outer frame is formed with a polarized surface mounting groove. The polarized surface light source circuit board is disposed within the polarized surface mounting groove. The polarizing plate is mounted on the mounting groove and covers the polarized surface light source circuit board. The mounting groove is provided for mounting the polarized surface light source circuit board, allowing the polarized surface light source circuit board to be disposed around the transmissive through-hole, providing a polarized surface light source, and not interfering with the normal operation of the coaxial light source.

[0010] Furthermore, an auxiliary frame extends downward along the inner side of the transmissive through hole, and the auxiliary frame and the inner wall of the polarizing plane outer frame form the polarizing plane mounting groove. A first through hole is defined in the center of the polarizing plane light source circuit board, and the polarizing plane light source circuit board is mounted in the mounting groove after passing through the first through hole of the polarizing plane light source circuit board. The auxiliary frame can further limit the position of the polarizing plane light source circuit board.

[0011] Furthermore, the four corners of the auxiliary frame are rounded, and the four inner corners of the first through hole are also rounded. The rounded corners can prevent the auxiliary frame from colliding with the polarized surface light source circuit board and damaging the polarized surface light source circuit board.

[0012] Furthermore, a stepped abutment is formed at the end of the auxiliary frame, a second through hole is provided in the middle of the polarizing plate, the four sides of the polarizing plate are detachably connected to the lower end of the polarizing plane outer frame, and the inner wall of the second through hole abuts against the stepped abutment.

[0013] Furthermore, the coaxial light source assembly includes a coaxial frame, a coaxial window plate, a coaxial light backplane, a coaxial spectrometer, a coaxial diffuser and a coaxial circuit board. The coaxial frame is composed of a coaxial left side plate, a coaxial right side plate, a coaxial front end plate and a coaxial light bottom plate. The coaxial light outlet is arranged on one side of the lower end of the coaxial frame, the coaxial light backplane is fixed to the other side of the coaxial frame relative to the coaxial light outlet, the coaxial window plate is fixed to the upper end of the coaxial frame, a coaxial observation window is opened on the coaxial window plate, the coaxial observation window is coaxially arranged with the coaxial light outlet, the coaxial spectrometer is obliquely arranged between the coaxial left side plate and the coaxial right side plate, the coaxial circuit board is fixed to the inner side of the coaxial light bottom plate, and the coaxial diffuser is arranged between the coaxial circuit board and the coaxial spectrometer.

[0014] Furthermore, the coaxial left plate and the coaxial right plate are both provided with a first snap-in groove inclined at 45°, and the coaxial beam splitter is snapped into the first snap-in groove. The coaxial front end plate and the coaxial window plate are respectively provided with a second snap-in groove and a third snap-in groove, and the head and tail ends of the coaxial beam splitter are respectively inserted into the second snap-in groove and the third snap-in groove.

[0015] Further, the coaxial diffusion plate is clamped on the fourth clamping groove, and the upper end of the coaxial diffusion plate is inserted into the third clamping groove. The fourth clamping groove can directly clamp the coaxial diffusion plate, facilitates installation, and improves installation efficiency.

[0016] Further, the coaxial light anti-reflection lens is arranged on the coaxial observation window. The coaxial light anti-reflection lens can reduce light reflection, improve light transmittance, and ensure that more light can penetrate the lens to reach a target object or a sensor.

[0017] Compared with the prior art, the utility model has the advantages that the utility model discloses a connecting piece is arranged on the polarized surface light source assembly, the coaxial light source assembly and the polarized surface light source assembly are combined into a whole, the two light source assemblies can be used simultaneously or separately according to different detection requirements, and the utility model is flexible and practical and can meet the needs of different scenes. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0019] Figure 1 It is a structure schematic view of the combined light source of the coaxial light source and the polarized surface light source of the utility model;

[0020] Figure 2 It is the exploded schematic view of Figure 1

[0021] Figure 3 It is a structure schematic view of the polarized surface light source assembly of the utility model;

[0022] Figure 4 It is the section schematic view along A-A line of Figure 1

[0023] Figure 5 It is a structure schematic view of the coaxial right side plate of the utility model;

[0024] Figure 6 It is a structure schematic view of the connecting piece of the utility model. ​​

[0025] Included in the diagram are:

[0026] 1. Polarized surface light source assembly; 11. Polarized surface outer frame; 111. Transmissive through hole; 112. Flat surface; 113. Polarized surface mounting slot; 12. Polarized surface light source circuit board; 121. First through hole; 13. Polarizer; 131. Second through hole; 14. Auxiliary frame; 141. Stepped abutment; 2. Coaxial light source assembly; 21. Coaxial light outlet; 22. Coaxial frame; 221. Coaxial left side panel; 2211. First snap-in slot; 2212. Four snap-in slots; 222, coaxial right side panel; 223, coaxial front end panel; 2231, second snap-in slot; 224, coaxial optical bottom panel; 23, coaxial window panel; 231, coaxial observation window; 232, third snap-in slot; 233, coaxial optical amplification lens; 24, coaxial optical back panel; 25, coaxial beam splitter; 26, coaxial diffuser; 27, coaxial circuit board; 3, connector; 31, first fixing portion; 32, second fixing portion; 33, bending portion. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in this embodiment of the present invention to clearly and completely describe the technical solution in this embodiment of the present invention. Obviously, the embodiment described is only one embodiment of the present invention, not all embodiments of the present invention. Based on this embodiment of the present invention, all other embodiments of the present invention obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this utility model.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as described in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0030] See also Figures 1 to 6 , an embodiment of the utility model provides a combined light source of a coaxial light source and a polarized surface light source, comprising a polarized surface light source component 1, a coaxial light source component 2 and a connector 3;

[0031] like Figure 1 and Figure 2As shown, the polarizing surface light source assembly 1 of this embodiment includes a polarizing surface outer frame 11, a polarizing surface light source circuit board 12 and a polarizing plate 13. A transmission through hole 111 is opened in the center of the polarizing surface outer frame 11, and a polarizing surface light source circuit board 12 arranged around the transmission through hole 111 is arranged in the polarizing surface light source assembly 1. LED lamp beads are arranged on the polarizing surface light source circuit board 12. Specifically, the upper end of the polarizing surface outer frame 11 is a flat surface 112, and the lower end of the polarizing surface outer frame 11 is formed with a polarizing surface mounting groove 113. The polarizing surface light source circuit board 12 is arranged in the polarizing surface mounting groove 113, and the polarizing plate 13 is installed on the mounting groove and covers the polarizing surface light source circuit board 12.

[0032] like Figure 3 As shown, in order to increase the stability of the installation of the polarized surface light source circuit board 12 and to avoid the overlapping problem of the optical paths of the polarized surface light source circuit board 12 and the coaxial light source assembly 2, in this embodiment, the inner side of the transmission through hole 111 extends downward to form an auxiliary frame body 14, and the auxiliary frame body 14 and the inner wall of the polarized surface outer frame 11 constitute a polarized surface mounting groove 113. A first through hole 121 is provided in the center of the polarized surface light source circuit board 12, and the first through hole 121 of the polarized surface light source circuit board 12 passes through the auxiliary frame body 14 and is then mounted in the polarized surface mounting groove 113. In order to prevent the corners of the auxiliary frame body 14 from damaging the polarized surface light source circuit board 12 when the inner wall of the first through hole 121 of the polarized surface light source circuit board 12 abuts against the auxiliary frame body 14, in this embodiment, the four corners of the auxiliary frame body 14 are rounded, and the four inner corners of the first through hole 121 are also rounded.

[0033] In this embodiment, a stepped abutment 141 is formed at the end of the auxiliary frame 14, and a second through hole 131 is provided in the middle of the polarizing plate 13. The four sides of the polarizing plate 13 can be detachably connected to the lower end of the polarizing surface outer frame 11, and the inner wall of the second through hole 131 abuts against the stepped abutment 141. In this way, after the polarizing plate 13 is installed, the inner wall of the second through hole 131 can be placed on the outside of the transmission through hole 111 without affecting the normal operation of the coaxial light source assembly 2. At the same time, it also ensures that the polarizing plate 13 can completely cover the light-emitting surface of the polarizing surface light source circuit board 12, thereby ensuring the stable operation of the polarizing surface light source circuit board 12.

[0034] A coaxial light outlet 21 is provided below the coaxial light source assembly 2, which is stacked above the polarized surface light source assembly 1 so that the coaxial light outlet 21 coincides coaxially with the transmission through hole 111, and the diameter of the transmission through hole 111 is slightly larger than that of the coaxial light outlet 21.

[0035] like Figure 1 、 Figure 2 、 Figure 4 and Figure 5As shown, the above-mentioned coaxial light source assembly 2 includes a coaxial frame 22, a coaxial window plate 23, a coaxial light back plate 24, a coaxial beam splitter 25, a coaxial diffuser 26 and a coaxial circuit board 27. The coaxial circuit board 27 is also provided with uniformly arranged LED lamp beads. The coaxial frame 22 is composed of a coaxial left plate 221, a coaxial right plate 222, a coaxial front plate 223 and a coaxial light bottom plate 224. The coaxial light outlet 21 is provided at On one side of the lower end of the coaxial frame 22, the coaxial optical backplane 24 is fixed to the other side of the coaxial frame 22 relative to the coaxial light outlet 21, and the coaxial window plate 23 is fixed to the upper end of the coaxial frame 22. A coaxial observation window 231 is provided on the coaxial window plate 23. The coaxial observation window 231 is coaxially arranged with the coaxial light outlet 21, and a coaxial light amplification lens 233 is also provided on the coaxial observation window 231. The coaxial beam splitter 25 is obliquely arranged on the coaxial Between the left side plate 221 and the coaxial right side plate 222, the coaxial circuit board 27 is fixed to the inner side of the coaxial optical bottom plate 224, and the coaxial diffusion plate 26 is arranged between the coaxial circuit board 27 and the coaxial beam splitter 25. Specifically, the coaxial left side plate 221 and the coaxial right side plate 222 are both provided with a first snap-fit ​​groove 2211 inclined at 45 degrees, and the coaxial beam splitter 25 is snapped into the first snap-fit ​​groove 2211. The coaxial front end plate 223 and the coaxial The window plate 23 is provided with a second snap-in slot 2231 and a third snap-in slot 232, into which the head and tail ends of the coaxial beam splitter 25 are respectively inserted. A fourth snap-in slot 2212 is provided on both the coaxial left plate 221 and the coaxial right plate 222, into which the coaxial diffuser 26 is snapped, and the upper end of the coaxial diffuser 26 is inserted into the third snap-in slot 232.

[0036] like Figure 1 and Figure 6 As shown, in this embodiment, there are two groups of connecting parts 3, which are respectively used to fix the two sides of the coaxial light source assembly 2. Each group of connecting parts 3 is in an "L" shape as a whole. The connecting parts 3 include a first fixing part 31 and a second fixing part 32 that are perpendicular to each other. An arc-shaped bending part 33 is formed at the junction of the first fixing part 31 and the second fixing part 32. Taking the left side of the coaxial light source assembly 2 as an example, the first fixing part 31 and the second fixing part 32 are detachably connected to the coaxial left side plate 221 and the flat surface 112 respectively.

[0037] The working principle of the present invention is briefly described as follows: the present invention assembles the coaxial light source assembly 2 above the polarized surface light source assembly 1 through the connector 3, and at the same time makes the coaxial light outlet 21 overlap with the axis of the transmission through hole 111. When in use, the coaxial light source assembly 2 can directly pass through the transmission through hole 111 to reach the object to be tested for illumination, and the polarized surface light source circuit board 12 and the transmission through hole 111 are separated by the auxiliary frame 14. When the two work at the same time, there will be no interference and they can assist each other; two groups of light sources can be used at the same time to meet the special light requirements of certain scenes, thereby eliminating the need to frequently replace the light source, which can better improve the detection efficiency and avoid damage to components caused by frequent replacement.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A combined light source of a coaxial light source and a polarized surface light source, characterized in that: It comprises a polarized surface light source assembly (1), a coaxial light source assembly (2) and a connecting piece (3); A transmission through hole (111) is provided at the center of the polarized surface light source assembly (1), a polarized surface light source circuit board (12) is provided in the polarized surface light source assembly (1) and surrounds the transmission through hole (111), and LED lamp beads are provided on the polarized surface light source circuit board (12); A coaxial light outlet (21) is provided below the coaxial light source assembly (2), and the coaxial light source assembly (2) is stacked above the polarized light source assembly (1), so that the coaxial light outlet (21) and the transmission through hole (111) are coaxially aligned, and the diameter of the transmission through hole (111) is slightly larger than the diameter of the coaxial light outlet (21); The connecting member (3) comprises a first fixing portion (31) and a second fixing portion (32) which are perpendicular to each other, and the first fixing portion (31) and the second fixing portion (32) are detachably connected to one side of the coaxial light source assembly (2) and the polarized surface light source assembly (1), respectively.

2. The combined light source of a coaxial light source and a polarized surface light source according to claim 1, characterized in that: The connecting member (3) is in an L-shape as a whole, and an arc-shaped bending portion (33) is formed at the junction of the first fixing portion (31) and the second fixing portion (32).

3. The combined light source of a coaxial light source and a polarized surface light source according to claim 1, characterized in that: The polarized surface light source assembly (1) further comprises a polarized surface outer frame (11) and a polarizing plate (13); the transmissive through hole (111) is arranged at the center of the polarized surface outer frame (11); the upper end of the polarized surface outer frame (11) is a flat surface (112); the lower end of the polarized surface outer frame (11) is formed with a polarized surface mounting groove (113); the polarized surface light source circuit board (12) is arranged in the polarized surface mounting groove (113); and the polarizing plate (13) is mounted on the mounting groove and covers the polarized surface light source circuit board (12).

4. The combined light source of a coaxial light source and a polarized surface light source according to claim 3, characterized in that: The inner side of the transmission through hole (111) extends downward to form an auxiliary frame (14), and the auxiliary frame (14) and the inner wall of the polarizing surface outer frame (11) form the polarizing surface mounting groove (113). A first through hole (121) is provided at the center of the polarizing surface light source circuit board (12), and the first through hole (121) of the polarizing surface light source circuit board (12) passes through the auxiliary frame (14) and is then mounted in the mounting groove.

5. The combined light source of a coaxial light source and a polarized surface light source according to claim 4, characterized in that: The four corners of the auxiliary frame (14) are rounded, and the four inner corners of the first through hole (121) are also rounded.

6. The combined light source of a coaxial light source and a polarized surface light source according to claim 4, characterized in that: A stepped abutting portion (141) is formed at the end of the auxiliary frame (14), a second through hole (131) is provided in the middle of the polarizing plate (13), and the four sides of the polarizing plate (13) are detachably connected to the lower end of the polarizing plane outer frame (11), and the inner wall of the second through hole (131) abuts against the stepped abutting portion (141).

7. The combined light source of a coaxial light source and a polarized surface light source according to claim 1, characterized in that: The coaxial light source assembly (2) comprises a coaxial frame (22), a coaxial window plate (23), a coaxial light back plate (24), a coaxial spectroscope (25), a coaxial diffusion plate (26) and a coaxial circuit board (27); the coaxial frame (22) is composed of a coaxial left side plate (221), a coaxial right side plate (222), a coaxial front end plate (223) and a coaxial light bottom plate (224); the coaxial light outlet (21) is arranged on one side of the lower end of the coaxial frame (22); the coaxial light back plate (24) is fixedly connected to the coaxial frame (22) relative to the coaxial light outlet (21) ), the coaxial window plate (23) is fixedly connected to the upper end of the coaxial frame (22), a coaxial observation window (231) is provided on the coaxial window plate (23), the coaxial observation window (231) is coaxially arranged with the coaxial light outlet (21), the coaxial spectroscope (25) is obliquely arranged between the coaxial left plate (221) and the coaxial right plate (222), the coaxial circuit board (27) is fixedly connected to the inner side of the coaxial light bottom plate (224), and the coaxial diffusion plate (26) is arranged between the coaxial circuit board (27) and the coaxial spectroscope (25).

8. The combined light source of a coaxial light source and a polarized surface light source according to claim 7, characterized in that: The coaxial left side plate (221) and the coaxial right side plate (222) are both provided with a first snap-fitting groove (2211) inclined at 45 degrees, and the coaxial beam splitter (25) is snap-fitted into the first snap-fitting groove (2211). The coaxial front end plate (223) and the coaxial window plate (23) are respectively provided with a second snap-fitting groove (2231) and a third snap-fitting groove (232), and the head and tail ends of the coaxial beam splitter (25) are respectively plugged into the second snap-fitting groove (2231) and the third snap-fitting groove (232).

9. The combined light source of a coaxial light source and a polarized surface light source according to claim 8, characterized in that: A fourth snap-fitting slot (2212) is provided on both the coaxial left side plate (221) and the coaxial right side plate (222); the coaxial diffusion plate (26) is snap-fitted to the fourth snap-fitting slot (2212); and the upper end portion of the coaxial diffusion plate (26) is inserted into the third snap-fitting slot (232).

10. The combined light source of a coaxial light source and a polarized surface light source according to claim 7, characterized in that: A coaxial light-increasing lens (233) is also provided on the coaxial observation window (231).

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